Large capacity: the storage space of the bicycle bag mobile phone case is 2.1 litres and offers space for various personal items. The bicycle mobile phone case is equipped with a mesh pocket on both sides for convenient storage. With headphone hole design, you can listen to music, make calls and charge the mobile phone while driving.7-inch smartphones: suitable for standard smartphones up to 7 inches. The handlebar bag mobile phone case is also equipped with a thick and double sponge protection layer, which is shockproof. The ventilation holes in the sponge protection layer can dissipate heat and prevent the phone from getting hot after prolonged use.Improved Velcro fasteners: with 3 adjustable and improved silicone Velcro fasteners, you can attach the bicycle frame bag securely and stably to your bicycle frame. The Velcro straps are made of silicone resin, which effectively prevents slipping, has strong adhesion and does not scratch the bike.Sensitive touch screen: the bicycle frame bag is equipped with a transparent TPU touch screen, which provides good touch sensitivity and can easily access all functions of the phone without opening the bicycle bag. The design of the sun shade can block some of the light and make the screen clearer.100% waterproof: the bicycle top tube bag is made of waterproof carbon grain and high-quality EVA material. And with a sealed and waterproof double zip, so that no water flows into the bicycle handlebar bag. Reflective strips on the sides of the top tube pocket mobile phone pocket ensures safety when driving at night.